So are you suggesting the dems don't have what the media suggest for this to take months? Hope it doesn't take months...
The dems have accusations. They do not have "proof". Despite what the white house is stating though, what they DO have is enough to warrant an investigation. There's sufficient Republican support out there (albeit quietly) for letting the facts come out in this situation. Heck, when you have a Republican Senator from Kentucky saying that he has concerns about phone calls going into the code-word access database, that should be a pretty good indicator that even Republicans feel that this particular investigation goes a little beyond the standard "witch hunt" response.
The committee will try to go as fast as possible because the longer it takes, the longer that the White House will have to coalesce a united response. Right now, they are all over the board, but I haven't seen a legitimate response to the question of "why did you withhold the money". There's been a generic response of "Well, we were telling them to root out corruption", but as far as I can tell, the only case of corruption that they have been investigating is concerning the Bidens. If they were to show a list of cases that they wanted further investigation on beyond the Bidens and could back that up with emails or texts, this impeachment inquiry goes away in a heartbeat.
As fast as they want to rush it though, they can't cut corners. Let's face it, the majority of us here arguing back and forth here on this forum are not lawyers and don't have one freaking clue about the rules and procedures that the intelligence community follows. This is not your standard court room / Judge Judy episode. Trump is going to have a team of lawyers trying to poke holes in this process, and any single slip up or short cut is going to have them either having the whole thing thrown out, or at the very least, going through some process that will delay things as much as possible. It's kind-of a weird dichotomy of defense strategy. The Trump defense lawyers would LOVE for the house to vote tomorrow on impeachment because they can make the legitimate claim that the impeachment is being vote on based upon accusations alone, but at the same time, they know that the longer this process takes, the more that the public will burn out from coverage / oversaturation of the story.
The one irony in all of this is that the Trump team can't destroy evidence. 50% of the reason that he won the last election was because he was able to paint Hillary as untrustworthy because of her email scandal. If some intern is ordered to bleach-bit one of their servers or phones, Trump is going to be raked over the coals mercilessly by the media and whomever emerges on the Democrat side.