Ideally, there will be no illegal immigration now or in the future. This should be one of the main aims of whatever will be passed.
I believe that mass deportation, while perhapsÂ the preferable outcome, is probably not going to happen and is a poor starting point for negotiation.
I believe the fairest outcome for everyone is that if you are here illegally now, and you would like to stay, you have to sacrifice something for forgiveness for prior lawbreaking. As such, the proper goal should be allowing dreamers (and others) to stay, if they have no criminal background, etc, and have documentation to prove having been here for more than say, 5 years, then they are eligible for permanent residence but forfeit the path to citizenship forever. If you would like to be a citizen, you must do it how everyone else has to.
I feel awful for dreamers, and feel sympathy for illegal immigrants, the former did not choose their path in most cases, and the latter by and large are just trying to do the best thing for their families and themselves. That said, you have broken the law and added to a culture of lawlessness and disrespect for American laws and institutions.
Under this principle, the illegal immigrants have a choice, and the choices do not adversely affect the American citizens and legal immigrants in a practical sense.
Under any immigration deal, we must significantly increase funding and staffing for immigration courts to ensure future law breakers are sent home ASAP. We must also fund the wall, even though I do not believe it will do much of anything in actuality, it will be symbolic of the American resolve to actually deal with illegal immigration.
We might also consider doing what most other nations do: throwing illegal immigrants in jail instead of playing stupid games with deportation, etc.
We must adopt a merit based immigration system. Immigrants should be permitted to come here, prioritized by their expected benefit to the rest of us. If we have to accept higher legal immigration numbers in exchange for stopping illegal immigration, I believe that is a fair trade.
Finally, we must make assimilation into American culture, including making English the official language of the USA, a priority of our immigration system. If you deem living in America as being better for you than living in your home country, it ought to be expected that you adopt our values, customs, language, and respect the culture you came to join.
What do I expect to happen? Mass amnesty and citizenship, or nothing, the preceding ordered by likelihood.