Lets play a game called "connect the dots"
- Russia hacked the DNC server
- Trump benefitted from that hack
- Trump used the information obtained from the Russians to attack Hillary
- Trumps aides had meetings with the Russians while this was going on
- Trump offered policy concessions for the Russians
- Trump aides did not report and denied meetings with the Russians
Republicans want us to stop investigating after the first dot
First of all, guilt cannot be established through connection of dots. You must have hard evidence which doesn't doesn't require dot connecting. Hillary would have been in prison a LONG time ago if we could convict people this way. So we begin with you having absolutely no concept of how justice works.
Secondly, you have no substantiation for the claims you're making. We don't know if Russia hacked a DNC server. The Russians claim they didn't and it's very much possible that whoever did, made it appear to be the Russians. Podesta's emails weren't hacked, his email account was phished (not hacked). This is Podesta's fault for being a moron.
We don't know if this "helped Trump" or not. That's a speculation. You're assuming that it did because it was devastating information against Hillary and the DNC. We're still a far cry from Trump committing some kind of crime. Being the beneficiary of the fallout of vast corruption from the other side isn't a crime. Nor is it a crime to use that in an ongoing political campaign.
Some Trump aids did have meetings with some Russians. There is no crime in meeting with Russians. You have zero evidence that Trump offered any policy concessions to the Russians but it doesn't matter anyway because that's also not a crime. Obama made all kinds of policy concessions with the Iranians through back channels before he took office.
And again... on your final point, meeting with Russians is not a crime. Flynn inadvertently filled out the wrong form in reporting and that is about all you have against him. But Flynn isn't Trump.
So you really don't have anything and after over a year of investigation, you've not turned up anything. In the process, countless laws have been broken in leaking classified information, unmasking the names of private citizens, wiretaps and surveillance that wasn't authorized properly and in flagrant violation of the Constitution. Someone needs to go to jail but it's not Trump.