Min V1
To answer your question. You cant just "up" your V1 to the minimum. This can as said happen on short runways in certain conditions(wet, etc as stated earlier) You can end up in a situation where you cant go, ( with those conditions)
Solution, find/wait for some headwind, or wait for runway to "dry" so that speeds now meet the "min speeds" requirements.Have a look at Jersey (wet).
(In passing, i think V2 can be, equal to,or greater than Vmu.)