The phrase "arguably it would be" is correct and usable in written English.
It can be used when presenting a point of view that is open to debate or interpretation, suggesting that there is a reasonable argument for a particular position.
Example: "Arguably it would be beneficial for the company to invest in renewable energy sources."
Alternatives: "It can be claimed that" or "One could argue that".
Arguably it would be very helpful to build more, construct new homes and expand further, rather than pay increasingly high amounts for existing property.
The report added: "Arguably it would be more appropriate to treat it as an investment market, rather than a residential market".
Arguably, it would be more frustrating still if Facebook did quite well – growing by 50% a year rather than doubling, or whatever is required by the elevated valuation set by Wall Street.
If you find a 30-degree wash sufficient with an ecological powder, then that's ideal; if not, then arguably it would be better to use a more powerful detergent rather than turn up the temperature dial.
Arguably, it would be better for the passengers although it would no doubt meet with fierce resistance from drivers' unions.
Arguably, it would be difficult or even impossible to select most exciting segments prior to 'seeing' the game as a whole, hence this assumption seems quite reasonable.
Arguably, it'd be ridiculous to play as a woman in Red Dead Redemption or Modern Warfare 2. These are games set in male worlds: the wild west, and a military unit.
Arguably, it'd be better than raising money with equity now that would be would worth a lot more later if Spotify does well.
Apple's new Retina display for the iPhone 4 is arguably more impressive, but it would be hard to show that off in a commercial without explaining it (and Apple seems to prefer to show rather than tell in these types of commercials).
James Watson and Francis Crick (1916 2004) won a Nobel Prize for one of the greatest scientific achievements of the 20th century (indeed, arguably the most fruitful), but it would be hard to state the law that they discovered.
The film is about mindbending oddness invading a normal, mainstream family, and it would be arguably far more ambitious to deal with the subject matter within a roughly conventional context.
